Manufacture of footed glassware



p 1933- J. H. AMBROSE 1,927,674

MANUFACTURE OF FOOTED GLASSWARE Filed March 7, 1931 r"? z? l L i i 9 INVENTOR Patented Sept. 19, 1933 UNITEDSTATES PATENT 1 j 1,927,674 MANUFACTURE OF FOOTEDVGLASSWARE- 7 James H. Ambrose, Rochester, Pa. Application March '7, 1931. "Serial No. 520,779

1 Claim.

It is the object of the invention to produce glassware of the class known as footed stemware more economically and expeditiously than before, with less handling, and by the use of apparatus which is comparatively light and is simple in character.

In the accompanying drawing I have shown in Figure 1, partly in elevation and partly in sectional elevation, apparatus suitable for the practice of the invention. Figure 2 is a plan view, upon a larger scale, of the upper edge face of the hollow cylindrical die or mold-ring hereinafter described. Figure 3 is a broken conventional elevation of the lower portion of the stem and the foot of the article produced by the apparatus of Figure 1. Figure 4 is a plan view of the foot shown in Figure 3, after having been reheated and flattened to finished form.

Referring to'Figure l, the apparatus shown comprises a table 3 mounted upon legs 2 upon a base 1, and having an aperture 4 surrounded on the upper face by a flanged rim 5 adapted to hold in position over the aperture 4 the downwardly-open matrix 6 of the sectional mold-body '7, having a hinge pin or pins 8 and a locking pin 9, and having an inwardly-projecting lower rim 10 adapted, when the mold is closed, to fit under the flange of the rim 5 surrounding the aperture 4 in the table.

The hollow cylindrical die or mold-ring 11 is supported within the aperture 4 by pins 12 secured to the lower face of the table 3 around the opening 4, and having their inner ends projecting into vertical slots 13 in the outer face of the ring 11, thus permitting a limited vertical movement of the ring. At its lower end the ring 11 rests upon the spiral compression spring 14 which surrounds the vertical plungerrod 15 and is supported thereon atits lower end by the collar 16, secured to the plunger-rod. The upper neck portion of the plunger-rod 15 projects up through the opening 1'7 in the lower P end of the ring 11 and carries at its upper end the rounded or knob-like plunger-head 18, which fits closely within the ring 11, and the lower flat face of which rests upon the internal shoulder 19 of the ring 11.

Any suitable means may be employed for operating the plunger. I show for that purpose a bell-crank lever 20, pivotally connected at the end of its inner arm 21 to the collar 22 secured to the plunger-rod 15. At its knuckle the lever is loosely connected to the upper end of a link 23, the lower end of which link is pivotally connected to the stud 24 on the base l. By

pulling outwardly upon the upper end of the lever 20 the plunger-rod 15 is forced upwardly, in its initial movement .yieldingly pressing the ring 11 upwardly into contact with the rimv or 9 shoulder 25 formed in the matrix 6 of the mold, and then by its further movement projecting the plunger-head 18 through the ring 11 into the matrix 6 above the rim 25. The outer half 26 only of the upper face'of the ring 11 contacts with the annular shoulder 25,1 and the inner half 27 of said upper face of the edge of ring 11 thus constitutes a mold-surface uponwhich, in conjunction with the plunger-head, the edge of the glass article is formed. The. matrix 6 of the mold includes the central extension 28, extending up through the mold, and open at its upper end, to form the stem of the article, such stembeing formed integrally with the substantially hemispherical foot which is formed in the cup-shaped w matrix 6 immediately beneath. l

The inner half 27 of the upper edge face of the ring 11 may be a plane surface, thus forming a plain edge upon the hemispherical foot of the article which is molded. But for reasons which will presently appear this inner half of the upper edge of the ring will in many cases be figured (as shown at '70 in Figure 1), in order to form a scalloped or figured edge upon the hemispherical foot of the article.

In operation, with the plunger and the ring 11 in lowered position, and the mold-body 7 open or withdrawn, a gather of'molten glass insufficient amount to form the stem and foot of the article will be dropped into the ring 11 upon the end 1 of the plunger. Then the mold '7 will be closed, and the blown body of the glass article superimposed upon the open, upper end of the stem portion 28 of the mold-matrix. I have shown the blown body B of the article, in this case a I goblet, still depending by the blowover from the blowpipe P, and the article and blowpipe centered in position by means of the clamp 29 mounted upon the post. 30 With the parts in this position the plunger-rod 15 will be projected upwardly, in its initial movement causing the upper edge face of the ring 11 to'seat upon the shoulder 25 in'the mold-matrix, andv then by further movement projecting the plunger-head up through the ring 11 into the mold-matrix and forming the stem and sealing its upper end to the base of the body 13, and the hemisphericallyshaped foot of the article depending from the stem, as will be apparent. The plunger will then v be withdrawn, the mold 7 opened, and the article with a corresponding figure, as shown in Figure 3. Upon reheating and flattening this hemispherical edge-figured foot, its edge will have the figured contour shown in Figure 4 or the drawing. And by suitably figuring the said inner.

mold-portion 2'7 of the upper edge of the ring 11, any desired contour may be given to the flattened foot of the figured article.

Both the collar 16 and the collar 22 are adiust-- ably secured to the plunger-rod 15,'thus providing for adjustment and. regulation of the stroke of the ring 11 and of. the plunger asmay be desired.

I claim as my invention: 7

In apparatus for the manufacture of footed glassware, the combination of a mold having a matrix comprising an open-topped stem portion and a downwardly open expanded bowl portion opening out from the lower end of said stem portion and having a downwardly-facing annular rim, a vertically-operable plunger-rod supported beneath and in axial alignment with said matrix and having a head secured to its upper end, a

7 hollow integral mold-ring yieldingly mounted on said plunger-rod closely surrounding said head and having at its upper edge an outer face pors ti-on adapted togbe seated against said mold-rim and an inner figured face portion adapted to form the edge'of the molded article, and means for operating said plunger-rod.

' JAMES H. AMBROSE. 

